单项选择题

衡量生产力水平的客观尺度是（）

A．劳动工具的状况
B．劳动者的素质
C．劳动对象的广度和深度
D．劳动产品的数量和质量

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单项选择题

如图所示销钉的挤压力σbs=( )。

A．
B．
C．
D．

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D.E.shangxueba.cn/images/ct_jgzjgysm_jgzjgyschoose_00544(20093)3.jpg'
F.G.shangxueba.cn/images/ct_jgzjgysm_jgzjgyschoose_00544(20093)4.jpg'
H.I.shangxueba.cn/images/ct_jgzjgysm_jgzjgyschoose_00544(20093)5.jpg'

单项选择题

第二节
听下面5段对话或独白。每段对话或独白后有几道小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。听每段对话或独白前，你将有5秒钟的时间阅读各个小题；听完后，各小题将给出5秒钟的作答时间。每段对话或独白读两遍。
听力原文：M: Sally! Sally! Could you please turn off the radio? I hate to have to say this,but it' s too noisy here. I' m reading my books and I' m preparing for my English exam this afternoon.
W: I' m not listening to the radio. The noise comes from our neighbours upstairs.
M: Oh ! How terrible ! I'll talk to them and let them be quiet !
Why is the man so annoyed?
A．Because he didn't like listening to radio.
B．Because his sister made him study very hard.
C．Because the noise disturbed him so much.

A.
W:
B.
M:
C.Because
D.
B．Because
E.
C．Because
F.